[XeTeX] How to load pstricks?

[Akira Kakuto]

Dear Sven,

> ! I can't find file `xdvipdfmx.cfg'.
> l.6 \input xdvipdfmx.cfg

Please search for a directory .../tex/generic/pstricks/config,
where xdvipdfmx.cfg usually exists.

Best,
Akira